Type sanity: add compile time check that integers are of the expected size.

The comments in silctypes.h guarantee that certain types are of
particular sizes.  Add compile time checks that will fail if these
guarantees are not met.

diff --git a/lib/silcutil/silctypes.h b/lib/silcutil/silctypes.h
index 70bc30165b4a41c530fa8508a90788184c47dd71..b22c7e771d83b1de276eb8edf1aab09ff59aab90 100644 (file)
--- a/lib/silcutil/silctypes.h
+++ b/lib/silcutil/silctypes.h
@@ -634,4 +634,11 @@ do {                                               \
 #endif
 /***/
 
+typedef char __check_size1[sizeof(SilcInt8)   ==       1 ? 1 : -1];
+typedef char __check_size2[sizeof(SilcUInt8)  ==       1 ? 1 : -1];
+typedef char __check_size3[sizeof(SilcInt16)  ==       2 ? 1 : -1];
+typedef char __check_size4[sizeof(SilcUInt16) ==       2 ? 1 : -1];
+typedef char __check_size5[sizeof(SilcInt32)  ==       4 ? 1 : -1];
+typedef char __check_size6[sizeof(SilcUInt32) ==       4 ? 1 : -1];
+
 #endif /* SILCTYPES_H */